(19)
(11) EP 2 289 755 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
20.07.2011 Bulletin 2011/29

(43) Date of publication A2:
02.03.2011 Bulletin 2011/09

(21) Application number: 10168040.3

(22) Date of filing: 01.07.2010
(51) International Patent Classification (IPC): 
B60W 30/18(2006.01)
 F16H 61/04(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR
Designated Extension States:
BA ME RS

(30) Priority: 25.08.2009 JP 2009194034

(71) Applicant: JATCO Ltd
Fuji-shi, Shizuoka 417-8585 (JP)

(72) Inventors:
  • Dohi, Koji
    Fuji-shi Shizuoka 417-8585 (JP)
  • Ishii, Minari
    Fuji-shi Shizuoka 417-8585 (JP)

(74) Representative: Grünecker, Kinkeldey, Stockmair & Schwanhäusser Anwaltssozietät 
Leopoldstrasse 4
80802 München
80802 München (DE)

   


(54) Automatic transmission control apparatus


(57) An automatic transmission control apparatus includes: a frictional engagement element; a hydraulic pressure supplying section configured to supply a hydraulic pressure to the frictional engagement element; a progression state judging section configured to judge a progression state of the engagement of the frictional engagement element; a rotational speed change rate control section configured to control the hydraulic pressure so that a change rate of a rotational speed of an input shaft of the automatic transmission becomes equal to a target change rate, from when the engagement of the frictional engagement element is started; and a rotational speed feedback control section configured to perform a feedback control of the hydraulic pressure so that the rotational speed of the input shaft of the automatic transmission becomes equal to a target rotational speed, from when the progression state judging section judges a predetermined progression state.







Search report